I can get the nth line of a file using
however all I want to type is "line n file" so I am trying to use alias
but its not working, how can I make this work
Thanks
Last edited by Franklin52; 04-07-2011 at 09:51 AM..
Reason: Please use code tags
Hello,
I'm a beginner to Unix and I want to create an alias that lists the given
directory in long format; the alias should use a pager to display the result.
Thanks in advance. (2 Replies)
hi..
i want to make an alias in unix, for using it to change of directory
by example:
if i am in /dtmp/inp/aux and i want to go to /sybase/bd, i want to make an alias named "bd", to go directally to /sybase/bd (alias bd="cd /sybase/bd")
i create it, but when i turn off the conection... (2 Replies)
Hi
I have a problem when i try to set any thing as alias it works
say alias sasa="cd /home/hghgg"
but when i close the terminal it does not work (5 Replies)
Dear All,
I have given alias to run a script which will calculate memory and cpu utilization as "utils" in my bash shell. Even i have given this entry in .profile and .bashrc in my home directory. It is working fine.
Now my question is that I want to use this alias in... (17 Replies)
I need to login to one server and then switch the user and set a number alias. But i cant modify the .profile file.
I have one script avi1.sh
$ more avi.sh
sudo su - bil
sh avi1.sh
and in home directory of bil i have avi1.sh that says
$ more avi1.sh
alias l='ls -ltr'
alias b='cd... (7 Replies)
If one:
$ find -name 'some expression' -type f > newfile
and then subsequently wants to create an alias file from each pathname the find command retrieved and the > placed within 'newfile', how would one do this? Ideally, the newly created alias files would all be in one directory.
I am... (3 Replies)
I am creating subversion pre commit hook on linux to run on client side but its not working and throwing an error -
alias svnbi="plutil *.plist|grep -v OK; if ; then svn ci -m $1 ; fi"
but when I run -
(test is $1 here)
svnbi test
bash: syntax error near unexpected token `test'
... (1 Reply)
Discussion started by: jacki
1 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)